326 



Mr. B. Lewis on the Lymphatic 



[June 21, 



hexyl bromide, which was converted into the acetate and the alcohol. The 

 latter yielded on oxidation acetic acid and normal butyric acid, showing 

 that it is methylbutyl carbinol. The boiling-points of the different com- 

 pounds are as follows : — 



Formula. Boiling-point. 



} 



Bromide ^ \ 



Acetate ^S 9 1- oH 3 



CH 



.Alcohol ...... ^S 9 1 CH . OH 136°-140 c 



CH 



Br.H.nd . CHBr 165°-167 



II. Normal Heptane yielded the following products : — 

 CH 3 



Acetate j CH . OC 2 H 3 169°-171° 



Alcohol . . .... | CH . OH 155°-157° 



The heptyl alcohol is methylpentyl carbinol, because on oxidation it 

 was resolved into acetic acid and normal pentylic acid. 



As result of this investigation it appears that by the action of bromine 

 on normal paraffins only secondary bromides of the general formula 

 C H 1 



71 cfi 1 I are f° rmec lj but not a trace of a primary bromide, or 



that the methyl groups which are present in these hydrocarbons, and 

 which are readily attacked by chlorine, are not touched by bromine 

 at all. 



In addition to the secondary bromides other products are formed 

 which, on distillation, decompose either completely or are resolved into 

 hydrobromic acid and non-saturated hydrocarbons, which are probably 

 olefines. By continuing this research I hope to ascertain the nature of 

 these non-volatile products. 



II. "The Relationships of the Nerve-cells of the Cortex to 

 the Lymphatic System of the Brain." By Be van Lewis, 

 F.R.M.S., Assistant Medical Officer at the West Riding 

 Asylum. Communicated by Dr. Ferrier, F.R.S. Received 

 June 8, 1877. 



[Plates) 1 & 2.] 



The great importance attached to an accurate appreciation of the re- 

 lationships existing between the nerve-cells and the lymphatic and 

 vascular systems in +he brain cortex will be recognized by all who are 

 engaged upon investigations in cerebral pathology, and cannot be well 



